"Playing the tapes is going to kind of put the cards out on the table. You get the opportunity to see what the prosecution has in their hands. That's a significant moment," said Local 4 legal expert Todd Flood.

Expect also to hear from "Steve," the man who allegedly helped Bob put the murder-for-hire deal together. What Bob didn't know was "Steve" was working with police.

"It's hard to take things out of context when the witness actually gets up on the stand and says, 'Well, this is what was going on, this is what I meant and this is how it was responded to,'" said Flood.